#scrollBanner{
    position: relative;
    width: 900px;
    height: 300px;
    overflow: hidden;
}
#scollList{
    position: absolute;
}
#scollList li{
    float: left;
}
#scollList img{
    width: 900px;
    height: 300px;
}
#btn span{
    position: absolute;
    width: 50px;
    height: 50px;
    font-size: 40px;
    text-align: center;
    line-height: 50px;
    background: #000000;
    opacity: .3;
    filter: alpha(opacity=30);
    color: white;
    top: 50%;
    margin-top: -25px;
    cursor: pointer;
}
#btn span:first-child{
    left: 20px;
}
#btn span:last-child{
    right: 20px;
}
#nums{
    position: absolute;
    right: 20px;
    bottom: 10px;
}
#nums li{
    float: left;
    width: 20px;
    height: 20px;
    margin: 0 10px;
    border-radius: 50%;
    background: white;
    color: red;
    text-align: center;
    line-height: 20px;
    cursor: pointer;
}
#nums li:hover,#nums li.hover{
    background: red;
    color: white;
}